Improvement in grates



G. RMERSHUN,

GRA TE.

Patented'Aug,-1, 1876.

Attorney;

@imams N.PETERS. PHOTO-LITHOGRAPHER, WASHINGTONA D. C.

tudinal vertical section thereof.

front view thereof, and Fig. 4 is a transverse y section in line w, Fig.l.

UNITEDiSTAT--S@ PATENT] FEICE;

GEORGE B. MEEsHoN,OEPHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT' 1N e'RATEs.

Specification forming part of Letters Patent No. 180,6l6, dated August 1, 1876; application filed July 1, 1876.

, hereby declare the following to be a clear and 'exact description of the nature thereof, sufiicient to enable others skilledv in the art to which my invention appertains to fully understand, make, and use of the same, reference being had to the accompanying drawings, making part of this specification, in.

Which- Figure 1 is a top or plan view of the grate embodying my invention. Fig. 2 is a longi- Fig. 3 is a Similar letters of reference indicate corresponding parts in the several figures.

My invention consists of a rotating gratebar, mounted at one end on a swinging hanger, and at the other end on a removable bearing, whereby the bar may be readily let down.

It also consists of a removably-fitted lock or plate for holding the grate-bars in position and allowing their displacement'when required, besides exposing a poker-hole for removal of clinkers, Snc.

Referring to the drawings, A represents a series of bars, which are mounted upon the supporting-plate B, and adapted to rotate thereon,-and they may be geared together so as to rotate simultaneously, or to rotate in pairs, or they may have motions independent of each other.

The bars may be hollow or solid, preferably the former, and from the face of each there project studs A', which are so disposed that the studs of the several bars alternate with each other, so that between the studs of one bar there project the studs ofthe adjacent bars, as most clearly shown in Fig. 1.

The central bar is mountedat its rear end on a swinging hanger, C, which is hinged'to a corresponding portion of the plate B, and at its front end on a bearing, D, which is removably titted to the front portion a of said plate.

The upper bearings for the bars consist of a plate, E, which is removably fitted to the l portion a of the grate -plate B, and bears against thejournals ot' the bars. In order to hold the plate E, and consequently the bars A, in position, buttons F are attached to the portion a, and they are adapted to bear againstor over the sides of theA plate E. l L

The outer ends of the bars will be squared for the application of a suitable key, whereby rotary motions may be imparted to the bars, and said bars may be geared together in pairs, or the entire series, whereby they may be corf respondingly rotated.

It will be seen that the bars and studs provide a proper support for the bed of fuel, and when the iire is to be raked, the bars will be rotated, whereby the fuel will be agitated by both the bars and the studs, which rotate together, judgment being necessary to rotate all of the bars, or only those bars at the portion` of the lire requiring raking.

When the re is to be let down, it can be conveniently accomplished by lowering the central bar. For this purpose, the bearing or block D will be removed, thus depriving thel central bar of the front support. Then said bar is released, its rear turning on the hanger C, as an axis, and the fire falls, the operation being assisted, if desired, by the rotation of the remaining grate-bars.

When the gratebars are to be removed from the plate B, the buttons F will be turned, and the plate or lock E withdrawn" from the front portion a ot' the plate B. The bars being uncontrolled by said plate E, may then be lifted from their bearings.

When clinkers, Ste., are to be removed, access Will be had thereto through an opening, b, in the front plate a, which opening is ada ted to be occupied or covered by the pla e E, by removing which a poker may be introduced, as shown by the arrow, Fig. 2.

After the several removable parts have beenV displaced, they may again be readily applied in position by properly locating them,

2. Rotating grate-bars,in combination with a removable plate or lock, E, substantially as and for the purpose set forth.

and then securing them at their respective places.

Having thus described my invention, what I claim as new, and desire to secure by Letters Putent,isv l. A rotating grate-bar mounted at one end on :L swinging; hanger, and at; the other Witnesses:

GEORGE B. MERSHON.

end on u removable bearing', substantially as JOHN A. WIEDERSHEIM, and for the purpose sot forth. A. P. GRANT. 

